GE A8950CC - Manual (Page 11)

NOTE: When making data connections listed in Tables 3 through 11, always connect the pins labeled IN
on the fiber unit to the pins labeled OUT on the external equipment, and the pins labeled IN on the
external equipment to the pins labeled OUT on the fiber unit.
TABLE 3: RS-232 INTERFACE
DATA SELECT Switch: Position 1
Signal Pin
1 RS-232 Out RS-232 Out
RS-232 In RS-232 In
N/C
N/C
N/C
RTS/CTS Out
RTS/CTS In
GND/SHIELD GND/SHIELD
GND
RS-422 Out (+)
RS-422 In (+)
N/C
Termination, tie to 8 if req’d.
RS-422 Out (-)
RS-422 In (-)
GND/SHIELD
GND/SHIELD
N/C
RS-485 (+)
+5 VDC Bias Out
Termination, tie to 8 if req’d.
N/C
RS-485 (-)
GND
GND/SHIELD
GND
GND/SHIELD
GND/SHIELD
N/C
N/C
TTL Out
TTL In
Tie to pin 6
N/C
N/C
N/C
N/C
Manchester/Biphase Out (-)
GND/SHIELD
Manchester/Biphase Out (+)
N/C
Manchester/Biphase In (-)
Manchester/Biphase In (+)
N/C
Termination, tie to 8 if req’d.
4
6
7
8
5
3
2
TABLE 5: TTL INTERFACE
DATA SELECT Switch: Position 3
Signal Pin
1
4
6
7
8
5
3
2
TABLE 6: RS-422 INTERFACE
DATA SELECT Switch: Position 4
Signal Pin
1
4
6
7
8
5
3
2
TABLE 7: MANCHESTER/BIPHASE INTERFACE
DATA SELECT Switch: Position 5
Signal Pin
1
4
6
7
8
5
3
2
TABLE 8: RS-485 2-WIRE INTERFACE
DATA SELECT Switch: Position 6 (<200mV),
Position 7 (<1V), Position 8 (<2V)
Signal Pin
1
4
6
7
8
5
3
2
TABLE 4: RS-232 WITH HANDSHAKING INTERFACE
DATA SELECT Switch: Position 2
Signal Pin
1
4
6
7
8
5
3
2
9